Detection tool for detecting size of pinhole terminal hole of automobile wire harness

Abstract

The utility model discloses a large testing fixture for testing a pinhole terminal hole of an automobile wire harness, which relates to the technical field of tool equipment in the automobile manufacturing industry and comprises a large circular ring F, a lead B and a pin terminal C. The large circular ring F is provided with a plurality of small circular rings D. One end of the lead B is fixed on the small circular rings D, and the other end of the lead B is fixed on the pin terminal C. The plurality of wires B are connected with pin terminals C of different models, and the wire B distinguishes the pin terminals C of different models through lengths and colors, so that when the wire harness pinhole terminal holes of an automobile are large, poor line contact and electric appliance function faults are caused, the wire harness pinhole terminal holes are large, and the wire harness pinhole terminal holes are large in size, the wire harness pinhole terminal holes can be replaced by the wire harness pinhole terminal holes. And difficult miscellaneous diseases caused by large wire harness terminal holes and poor contact can be quickly checked. The fault terminal can be quickly found and the fault can be eliminated, and the production quality of the product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tooling and equipment technology in the automotive manufacturing industry, and more specifically, to the design of a large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses. Background Technology

[0002] In the automotive manufacturing process, due to insufficient manufacturing level and precision, errors exist in the matching accuracy of wire harness connectors, especially poor contact between the pin terminals and the pin holes of the wire harness connectors, leading to some automotive circuit faults. Unlike typical wire harness terminal misalignment or misalignment, where the cause of the fault is easily identified, some pin terminals and pin holes appear flawless but can cause problems under certain conditions. For example, poor terminal contact may occur after a car has been idle for a period of time, or when the car travels over bumpy roads, leading to various functional faults due to poor contact of the wire harness terminals. When troubleshooting such faults, there are no short circuits or open circuits in the wiring, and no abnormalities are found during wiring measurements. The pin terminals and pin holes also appear flawless, making it difficult to find the true cause of the fault. Therefore, the automotive manufacturing and repair fields urgently need a method and tool to quickly troubleshoot such poor wire harness terminal contact, not only to quickly locate and eliminate faulty terminals but also to ensure product quality.

[0003] Some automotive electrical malfunctions are caused by poor contact at the wiring harness terminals, or by oversized pinholes. However, this is often imperceptible to the naked eye. Furthermore, a single plug or connector may have dozens of pinholes densely packed together, making it impossible to pinpoint which one is oversized. According to standard terminal insertion and removal requirements, the terminal and its hole should have a tight, secure connection with a certain locking force. By using a qualified terminal of the corresponding model to insert and remove each pinhole, any loose pinholes or those with excessively low insertion / removal resistance are considered defective. Using simple inspection tools, the cause of the fault can be quickly identified, while also mitigating the quality risk of such defective products entering the market. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a large inspection tool for measuring pinhole terminals in automotive wiring harnesses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] like Figure 1A large inspection tool for measuring pinhole terminals of automotive wiring harnesses includes a large circular ring F, a wire B, and pin terminals C. The large circular ring F has several small circular rings D. One end of the wire B is fixed to a small circular ring D, and the other end is fixed to a pin terminal C. The wire B has multiple pin terminals C of different models connected to it. The wire B distinguishes the different models of pin terminals C by its length and color.

[0007] Preferably, multiple conductors B are provided, and the multiple conductors B have a variety of different colors.

[0008] Preferably, the pin terminal C has a variety of different diameters, with the diameter of the plurality of pin terminals C ranging from 0.5 to 2.3 mm and increasing sequentially.

[0009] Preferably, the small ring D has a limit spring E on each of its left and right sides.

[0010] Preferably, the conductor B has different lengths, with the lengths of multiple conductors B ranging from 40mm to 80mm, increasing by 5mm sequentially.

[0011] Preferably, the limiting springs E are evenly distributed on the large ring F.

[0012] Furthermore, compared to existing technologies, this invention has the following advantages: By employing the aforementioned technical solution, it can quickly troubleshoot complex problems caused by large wiring harness terminal holes and poor contact in the automotive manufacturing and repair fields. It not only quickly locates and eliminates faulty terminals but also ensures product quality. Simultaneously, it is simple to operate, highly efficient, and can be bent and folded arbitrarily for convenient storage. Attached Figure Description

[0013] Figure 1 This is a large inspection fixture structure for testing wire harness pinhole terminal holes.

[0014] Figure 2 Enlarged plan view of a single fixture for measuring the pinhole terminal hole of a wire harness

[0015] Figure 3 Principle of large inspection tool for testing wire harness pinhole terminal holes

[0016] In the diagram: A - pin terminal, B - wire, C - pin terminal, D - small ring, E - limit spring, F - large ring, G - wire under test. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figure 1-3 As shown, a large inspection tool for testing automotive wiring harness pinhole terminals includes a large circular ring F, a wire B, and pin terminals C. The large circular ring F has several small circular rings D. One end of the wire B is fixed to a small circular ring D, and the other end is fixed to a pin terminal C. The wire B has multiple pin terminals C of different models connected to it. The wire B distinguishes different models of pin terminals C by length and color, enabling operators to quickly and accurately identify and differentiate various models of pin terminals, avoiding testing errors or repeated testing due to model confusion, and further improving the efficiency of the testing work.

[0019] The wires B are configured in multiple ways, and the multiple wires B are configured in various different colors to distinguish different types of pin terminals C.

[0020] The pin terminal C has various diameters, ranging from 0.5 to 2.3 mm, and increases sequentially in a clockwise or counterclockwise direction, making it suitable for different models currently in production.

[0021] Each of the left and right sides of the small ring D has a limit spring E, which is used to limit the position of the wire B and prevent the wire bundle from getting tangled together.

[0022] The wire B has different lengths, ranging from 40mm to 80mm, with the length of the wire B increasing by 5mm in each increment.

[0023] The limiting springs E are evenly distributed on the large circular ring F.

[0024] The working principle is as follows: Take a pin terminal C gauge that matches the model of the pin terminal A being tested, insert it into pin terminal A, and repeatedly insert and remove it to feel the insertion and removal resistance. If there is no looseness and there is appropriate insertion and removal resistance, it indicates that the hole diameter of pin terminal A meets the requirements, the electrical connection stability is good, and it is judged as qualified. If there is obvious looseness and no resistance when inserting and removing, it indicates that the hole diameter of pin terminal A is too large, which may lead to poor circuit contact and pose a quality risk of electrical connection failure. This method can quickly and accurately determine whether the hole diameter of pin terminal A meets the standard, ensuring the reliability and safety of automotive wiring harnesses.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses, characterized in that: It includes a large circular ring F, a wire B, a pin terminal C, and a pinhole terminal A. The large circular ring F has several small circular rings D. One end of the wire B is fixed to a small circular ring D, and the other end is fixed to a pin terminal C. The wire B has multiple pin terminals C of different models connected to it. The wire B distinguishes the different models of pin terminals C by its length and color.

2. The large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses according to claim 1, characterized in that: Multiple wires B are provided, and the multiple wires B are distinguished by a variety of different colors.

3. The large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses according to claim 1, characterized in that: The pin terminals C have various diameters, with the diameter of multiple pin terminals C ranging from 0.5 to 2.3 mm and increasing sequentially.

4. The large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses according to claim 1, characterized in that: Each of the left and right sides of the small circular ring D has a limit spring E.

5. A large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses according to claim 2, characterized in that: The conductor B has different lengths, with the lengths of multiple conductors B ranging from 40mm to 80mm, increasing by 5mm sequentially.

6. A large inspection tool for measuring pinhole terminal holes in automotive wiring harnesses according to claim 4, characterized in that: The limiting springs E are evenly distributed on the large circular ring F.

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